Enhancement of Pool Boiling Critical Heat Flux in Dielectric Liquids
Author : Mehmet Arik
Publisher :
Page : 462 pages
File Size : 36,16 MB
Release : 2001
Category :
ISBN :
Author : Mehmet Arik
Publisher :
Page : 462 pages
File Size : 36,16 MB
Release : 2001
Category :
ISBN :
Author : Eric Christopher Forrest
Publisher :
Page : 130 pages
File Size : 18,14 MB
Release : 2009
Category :
ISBN :
(Cont.) Results indicate that the low global warming potential fluorinated ketone may be a viable alternative in the cooling of electronic devices. Additionally, results demonstrate that enhancement of boiling heat transfer is possible for well-wetting dielectric fluids, with 40% enhancement in the critical heat flux using dilute suspensions of aluminum or silica nanoparticles in the fluorinated ketone.
Author : Abhay Ashok Watwe
Publisher :
Page : 504 pages
File Size : 30,21 MB
Release : 1996
Category :
ISBN :
Author : N. Zuber
Publisher :
Page : 216 pages
File Size : 17,20 MB
Release : 1959
Category : Heat
ISBN :
Author : Seung Mun You
Publisher :
Page : 670 pages
File Size : 29,84 MB
Release : 1990
Category :
ISBN :
Author : Young I. Cho
Publisher : Academic Press
Page : 459 pages
File Size : 45,21 MB
Release : 2011-11-28
Category : Science
ISBN : 0123815290
Advances in Heat Transfer fills the information gap between regularly scheduled journals and university-level textbooks by providing in-depth review articles over a broader scope than in journals or texts. The articles, which serve as a broad review for experts in the field, will also be of great interest to non-specialists who need to keep up-to-date with the results of the latest research. This serial is essential reading for all mechanical, chemical and industrial engineers working in the field of heat transfer, graduate schools or industry. Provides an overview of review articles on topics of current interest Bridges the gap between academic researchers and practitioners in industry A long-running and prestigious series
Author : Camil-Daniel Ghiu
Publisher :
Page : pages
File Size : 12,72 MB
Release : 2007
Category : Ebullition
ISBN :
A study of pool boiling of a dielectric liquid (PF 5060) from single-layered enhanced structures was conducted. The parameters investigated were the heat flux, the width of the microchannels and the microchannel pitch. The boiling performance of the enhanced structures increases with increase in channel width and decrease in channel pitch. Simple single line curve fits are provided as a practical way of predicting the data over the entire nucleate boiling regime. The influence of confinement on the thermal performance of the enhanced structures was also assessed. The main parameter investigated was the top space (0 mm 3{13 mm). High-speed visualization was used as a tool . For the total confinement (= 0 mm), the heat transfer performance of the enhanced structures was found to depend weakly on the channel width. For>0 mm, the enhancement observed for plain surfaces in the low heat fluxes regime is not present for the present enhanced structure. The maximum heat flux for a prescribed 85 °C surface temperature limit increased with the increase of the top spacing, similar to the plain surfaces case. Two characteristic regimes of pool boiling have been identified and described: isolated flattened bubbles regime and coalesced bubbles regime. A semi-analytical predictive model applicable to pool boiling under confinement is developed. The model requires a limited number of empirical constants and is capable of predicting the experimental heat flux within 30%.
Author : Ephraim M. Sparrow
Publisher : Academic Press
Page : 414 pages
File Size : 29,12 MB
Release : 2021-12-01
Category : Technology & Engineering
ISBN : 0323850820
Advances in Heat Transfer, Volume 53 in this long-running serial, highlights new advances in the field, with this new volume presenting interesting chapters written by an international board of authors. Provides the authority and expertise of leading contributors from an international board of authors Presents the latest release in the Advances in Heat Transfer series
Author : Victor Joseph Lepere (Jr)
Publisher :
Page : 97 pages
File Size : 18,59 MB
Release : 1980
Category :
ISBN :
Experimental results of the heat transfer performance of three enhanced surfaces, a Union Carbide, Linde High Flux, a Hitachi Thermoexcel-E, a Wieland Gewa-T, and a plain copper surface in the nucleate pool boiling regime in R-113 and FC-72 are presented. Prior to obtaining the data, each of the surfaces was subjected to one of three initial conditions, and the effect of past history on boiling incipience was observed. The data showed that all the surfaces behaved in a similar manner prior to the onset of boiling. Temperature overshoots were most pronounced for the initial condition in which the surfaces were submerged in the liquid pool overnight. All of the enhanced surfaces exhibited a two to tenfold increase in the heat transfer coefficient when compared to the plain surface. The High Flux surface was most effective over a broad range of heat fluxes. The Hitachi surface showed a similar gain in heat transfer coefficient to that of the High Flux surface below 10 kW/sq m, while the Gewa-T surface was not as effective as the other surfaces at low heat fluxes. At high fluxes, the Gewa-T surface performed in a comparable if not better manner. (Author).
Author :
Publisher : Springer
Page : 0 pages
File Size : 41,82 MB
Release : 2018-07-31
Category : Science
ISBN : 9783319266947
This Handbook provides researchers, faculty, design engineers in industrial R&D, and practicing engineers in the field concise treatments of advanced and more-recently established topics in thermal science and engineering, with an important emphasis on micro- and nanosystems, not covered in earlier references on applied thermal science, heat transfer or relevant aspects of mechanical/chemical engineering. Major sections address new developments in heat transfer, transport phenomena, single- and multiphase flows with energy transfer, thermal-bioengineering, thermal radiation, combined mode heat transfer, coupled heat and mass transfer, and energy systems. Energy transport at the macro-scale and micro/nano-scales is also included. The internationally recognized team of authors adopt a consistent and systematic approach and writing style, including ample cross reference among topics, offering readers a user-friendly knowledgebase greater than the sum of its parts, perfect for frequent consultation. The Handbook of Thermal Science and Engineering is ideal for academic and professional readers in the traditional and emerging areas of mechanical engineering, chemical engineering, aerospace engineering, bioengineering, electronics fabrication, energy, and manufacturing concerned with the influence thermal phenomena.